Nir Eyal is an investor, educator, and author of the book “Hooked: How To Build Habit Forming Products.” He’s also a frequent contributing writer for Forbes, TechCrunch, and Psychology Today. You can also find him on his blog, NirandFar.com, where he writes about Business, Behavior, and the Brain. - See more at: http://www.dean.li/hooked-how-to-build-habit-forming-products/#sthash.bcGB4qFm.dpuf